Boiler-cooling device



Dec. 15 1925- A. CALLOUGH BOILER COOLING DEVICE Filed Jan. 5, 1925 NESSES M4 ATTORNEY Patented Dec. 15, 1925.

UNITED STATES ALBERT Ii. GALLOUGI-I, OF TUSCUMBIA, ALABAMA.

BOILER-COOLING DEVICE.

Application filed January 3, 1925.

To all whom it may concern:

Be it known that I, ALBERT L. CALLOUGH, a citizen of the United States, residing at Tuscumbia, in the county of Colbert and State of Alabama, have invented a new and useful Improvement in Boiler-Cooling Devices, of which the following is aspecification.

This invention relates to devices for cooling boilers.

The object is to provide simple means which may be readily attached to boilers of different types after the fire has been drawn and, by the utilization of a steam jet, to create a partial vacuum in the steam or water drum desired to be cooled, thus causing the heat to be evacuated therefrom and at the same time cool air from the atmosphere issucked into the drum, either through the open man-hole at the other end thereof or, in the case of multiple drum boilers, through the open man-holes of one or more of the other drums, to rapidly cool the en tire boiler and enable workmen to enter any or all of the drums for the purpose of clean ing or repairing the same, thus saving time.

Another object is to provide a portable device which may be easily handled, adjusted or set up in position at the open manhole of the desired drum, by a single workman if necessary, and operated to draw the heat from the drum and supply the same with cool, fresh air to enable the repair man or cleaner to work more efiiciently within the same, the said device being easily re moved from such position and reapplied in position at the open man-hole of another drum, until all of the drums are cooled.

A final object is to provide a simple, compact device which may be easily and quickly installed in position to do the required work and having few parts, thus rendering the same to be easily and cheaply manufactured, said parts being rigidly secured in position and requiring no adjustment or manipulation during the operation of the same. A full and complete understanding of the invention may be obtained from a consideration of the following detailed description, taken in connection with the accompanying drawing forming a part of this specification, it being understood that while the drawing shows a practical form of the invention, the latter is not to be confined to strict conformity with the showing thereof, but may Serial No. 437.

be changed or modified, so long as such changes or modifications mark no material departure from the salient features of the invention, as specifically pointed out in the appended claims.

In the drawing, in which similar reference characters designate corresponding parts throughout the several Figures Figure 1 is a perspective View of a portion of an upright boiler showing the improved cooling device in position;

Figure 2 is a vertical, longitudinal section through the cooling device;

Figure 3 is a transverse sectional view taken 011 the line 33 of Figure 2.

Ordinarily, when it is necessary to clean boilers by the removal of accumulations of mud, dirt and scale therefrom, or to repair I the same, as in the case of leaky tubes or fines, the fires are drawn'and the water and steam removed therefrom, and the boiler is allowed to stand until it becomes cool enough for workmen to enter through the several man-holes to do their work. This sometimes takes many hours before the boiler is cool enough to enter, especially in the case of a multiple drum steam generating boiler, and if the cleaning or repairing operations are extensive, the entire boiler is sometimes out of commission from thirtysix to forty-eight hours, thus resulting in great loss to the operator. By the employment of the improved device herein shown and described, it is possible to place a boiler of any type in condition to be entered by workmen in a fraction of the time usually required, and to do their work in comfort, thus enabling the boiler to be speedily returned to service and effecting a considerable saving.

The portion of an upright boiler shown in Figure 1 of the drawing comprises the usual water heating drum 1 located within the furnace structure, at or near the ground level and immediately in rear of the usual grate, the water being adapted to be preheated therein, and rising through batteries of tubes 2 to a plurality of steam drums 3 located over the same and suitably supported in position by the usual means, it being deemed unnecessary to illustrate here in more than the drums and the tubes.

The drums l and 3 are provided in their corresponding ends with man-holes 4;. haw ing the usual closures 5 in connection there with, which may be readily removed when it is desired to enter the drum or drums.

The improved coolin device comprises an elongated, tubular flue or casing 6 formed of suitable sheet metal of sutlicient strength to ithstand rough usage and prevent denting or other injury, and yet sufliciently light to be handled by a single workman. The line or casing (3 is preferably tapered throughout its length, thus providing a larger inner end 7, and a reduced outer end 8, reinforced by a hoop or band 8", as shown in Figure 2 of the drawing, the said larger end 7 being of a diameter to easily enter into any one of the man-holes r and leave only a small margin of space around the same when in position.

Adjacent to the said inner, larger end, there is provided a radially disposed support 9, former of suitable metal, and having an attaching foot portion 10 which is suitably secured to the interior wall of the flue, as by rivets 11, and said support is provided at the longitudinal center of said flue with an opening 12.

\Vithin the flue and djacent to the ends of the same, there are secured, as by rivets 13, metal straps or keepers 14, which are suitably formed to receive and rigidly hold in position a steam pipe 15, extending longitudinally of the flue 6 and abutting again t the interior wall thereof throughout its length, the inner end of the said pipe being connected to a perpendicular pipe 16, and the terminal portion of the latter pipe bein in turn, connected-t0 a longitudinal pipe to provide a nozzle 17, directed toward the outer end of the flue and extending parallel and in alinement with the longitudinal axis of the same, the end of the pipe being open, as shown, and adapted to pass through the aforesaid opening 12 in the support 9 to be rigidly held by the same within the flue. The return-bend thus formed is lo cated close to the inner or larger end of the flue, and is protected by the same when the device-is not in use.

When the device is applied to the man hole in the lower drum 1, the outer, projecting end of the flue may be supported upon an ordinary truck or wooden horse 18 or by any other means, and when using the device upon one of the upper drums any suitable rigging may be employed for the purpose.

The outer end of the pipe 15 projects beyond the small end of the flue, and is suitably threaded as at 19 for the reception of an ordinary coupling 20, which carries a short length of metal pipe 21 constituting a handle for the cooling device to facilitate directing the inner end of the flue into the open man-hole. The outer end of the handle 21 is suitably connected to a flexible hose 22, capable of conveying steam to the cooling device and connected at the other end to a source of supply, such as one of the boilers in the plant.

When the device supported in position in the open man-hole of the lower drum, as shown, one or two of the man-holes in the upper drums are also opened for the ing iss of cool air from the atmosphere, and it will be seen that when the steam is turned on, the outwaidly-directed jet caused by the nozzle 17, will cause an evacuation of the heated air within the lower drum 1, and a consequent similar effect within the drums above which have their man-holes open. This causes the cool air to rush in the upper drums and through the tubes 2, to the lower drum causing a rapid cooling of the system. The device may then be applied to another open man-hole and others left open for the purpose, as will be seen,

when the entire boiler becomes cool and workmen may immediately proceed with their cleaning or repairing operations. Instead of steam, compressed air may be used, if desired.

From the foregoing it will be seen that a simple, cheaply manufactured, and strong and durable device has been provided for cooling the drums of boilers of different types, the same being composed of few parts and requiring no special adjustment, manipulation or attention during its operation.

hat is claimed is 1. A device for cooling steam boilers, comprising a tubular flue open at each end, and adapted to have one end partially inserted into the open man-hole of a steam drum, a fluid pressure pipe extending from a source of supply into the open, outer end of said flue, and having a returnbend at the inner end of the flue terminating in an outwardly directed nozzle located in alinement with the longitudinal axis of said flue.

2. A device for cooling steam or other boilers, comprising a tapered flue having each end open, and adapted to be supported withthe larger end inserted into'the open man-hole of a steam drum, a fluid pressure pipe extending through the flue and secured to the inner wall thereof, a flexible connection secured to the outer end of the pipe where projecting from the smaller end of the flue to convey fluid pressure to said pipe, the latter having a return bend at the inner, larger end of the flue and terminating in a longitudinally disposed nozzle located at the axis of the flue and directed toward the smaller, outer end of the latter to cause a partial vacuum in said drum and exit of the heat.

A device for cooling multiple drum or similar types of boilers comprising a tapered tubular, open-ended flue, the larger end being ot a diameter to be freely intro duced into the man-hole of one of the drums Yr: lJu

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after one or more other man-holes have outwardly and draw the heat from the drum been opened in other drums, means for supwith a consequent inflow of cool air through 10 porting the outer, smaller end of the flue Said pen man-holes. Where projecting from the man-hole, and a In testimony that I claim the foregoing 5 fluid pressure pipe traversing said flue and a y w I v h r o afliXed my having an outwardly directed nozzle located s g ad'acent to the inner end and at the long ihis tu inal center to cause a jet of fluid to flow ALBERT tfi 

